Hishoken
Complete | TSUNODA Ryoku | 2009 released
very little sex (only in the end), but I enjoyed the relationship a lot, and the personalities.
Toiki Yori Mo Yasashii
Complete | Minase Masara | 2008 released
Hatsukoi no 70% wa,
Complete | YAMANAKA Hiko | 2000 released
the main story FINALLY has sex after the two one shots, and the development is sweet.
Ki ga Au to Iu Koto wa
Complete | ASOU Kai | 2015 released
The first story is very sweet, the second also, plus the seme is kinda Hachi!
Heart no Kakurega